The Summit Batura is a fully waterproof down jacket with fixed hood and box wall construction for extreme conditions.Hiding within the bo -wall construction is 468g (size large) of 800 fill power European goose down and 30 years of down filling know-how. This is then all wrapped up in a waterproof and fully taped Pertex Shield outer shell. The Batura has been extensively tested in the most extreme of conditions and is a regular partner to Rab athletes when they head for polar regions or high altitudes in the harshest of conditions.